The **HS2260D-R2** is a high-performance remote control encoder IC commonly used in wireless RF (Radio Frequency) communication systems. It is widely recognized as a compatible, low-cost alternative to the classic PT2260 series. --- ### 1. Technical Specifications The HS2260D-R2 is designed for CMOS technology and operates with low power consumption. Below are its key technical parameters: | Parameter | Value / Range | | :--- | :--- | | **Operating Voltage (Vcc)** | 3.0V to 12.0V | | **Standby Current** | < 1.0 µA | | **Operating Temperature** | -20°C to +70°C | | **Encoding Format** | Fixed Code (Tri-state: 0, 1, Floating) | | **Package Type** | SOP-16 (Surface Mount) | | **Oscillation Method** | External Resistor (Rosc) | --- ### 2. Functional Features The chip translates parallel inputs into a serial bitstream for RF transmission. * **Fixed Code Encoding:** It supports up to 10 address bits, allowing for $3^{10}$ (59,049) unique code combinations. This reduces the risk of interference between different remotes. * **Tri-state Pins:** Each address pin can be set to "High," "Low," or "Left Floating," providing high flexibility in coding. * **Built-in Oscillator:** It only requires a single external resistor connected between the `OSC1` and `OSC2` pins to set the transmission frequency. * **Data Pins:** It typically features 2 to 6 data pins (D0–D5) that trigger the transmission when pulled High. --- ### 3. Pin Configuration (SOP-16) The following table outlines the standard pinout for the HS2260D-R2: | Pin Number | Name | Description | | :--- | :--- | :--- | | 1 - 10 | A0 - A9 | Address Pins (Used to set the unique security code) | | 11 - 13 | D2 - D0 | Data Input Pins (Used as triggers for commands) | | 14 | TE | Transmission Enable (Active Low) | | 15 | OSC2 | Oscillator Output | | 16 | OSC1 | Oscillator Input | | 12 | Vcc | Positive Power Supply | | 9 | Vss | Ground | --- ### 4. Typical Application Circuit When building a remote control with the HS2260D-R2, the setup usually follows this logic: ```markdown 1. Power: Connect Vcc (e.g., 12V battery) and Vss (GND). 2. Coding: Solder the A0-A9 pins to Vcc, GND, or leave them open to match the receiver's code. 3. Oscillation: Connect a resistor (e.g., 4.7MΩ) across OSC1 and OSC2. 4. Transmission: Connect the DOUT (Data Out) pin to the input of an RF Transmitter module (usually 315MHz or 433MHz). ``` --- ### 5. Common Use Cases * Wireless security systems (Burglar alarms). * Remote controlled toys and garage door openers. * Remote light switches and smart home automation. * Industrial remote control units.